1025863 has 4 divisors (see below), whose sum is σ = 1028088. Its totient is φ = 1023640.

The previous prime is 1025839. The next prime is 1025873. The reversal of 1025863 is 3685201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1025863 - 2⁹ = 1025351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (257022).

2^1025863 is an apocalyptic number.

1025863 is a deficient number, since it is larger than the sum of its proper divisors (2225).

1025863 is an equidigital number, since it uses as much as digits as its factorization.

1025863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1025863 is about 1012.8489522135. The cubic root of 1025863 is about 100.8547728167.

The spelling of 1025863 in words is "one million, twenty-five thousand, eight hundred sixty-three".